From e9f3de034a28a2bbcb3fd6cbc88907e9c11de85a Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Tue, 9 Dec 2025 00:34:13 +0000
Subject: [PATCH 1/2] Initial plan


From 1c6cfa8af61b7b967d113c0c45efe11194d070fc Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Tue, 9 Dec 2025 00:54:54 +0000
Subject: [PATCH 2/2] Apply PR #122305: Update Docker image from Debian 12 to
 Debian 13 with GCC15

Co-authored-by: richlander <2608468+richlander@users.noreply.github.com>
---
 docs/workflow/using-docker.md                              | 2 +-
 eng/pipelines/common/platform-matrix.yml                   | 2 +-
 eng/pipelines/common/templates/pipeline-with-resources.yml | 4 ++--
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/docs/workflow/using-docker.md b/docs/workflow/using-docker.md
index 99601f1219edfd..143d9407e27fd0 100644
--- a/docs/workflow/using-docker.md
+++ b/docs/workflow/using-docker.md
@@ -47,7 +47,7 @@ The main Docker images are the most commonly used ones, and the ones you will pr
 | Azure Linux (x64) | Debian sid                 | LoongArch     | `mcr.microsoft.com/dotnet-buildtools/prereqs:azurelinux-3.0-net10.0-cross-loongarch64`   | `/crossrootfs/loongarch64` |
 | Azure Linux (x64) | Ubuntu 18.04               | S390x         | `mcr.microsoft.com/dotnet-buildtools/prereqs:azurelinux-3.0-net10.0-cross-s390x`         | `/crossrootfs/s390x`   |
 | Azure Linux (x64) | Ubuntu 18.04 (Wasm)        | x64           | `mcr.microsoft.com/dotnet-buildtools/prereqs:azurelinux-3.0-net10.0-webassembly-amd64`   | `/crossrootfs/x64`     |
-| Debian (x64)      | Debian 12                  | x64           | `mcr.microsoft.com/dotnet-buildtools/prereqs:debian-12-gcc15-amd64`                     |        *N/A*           |
+| Debian (x64)      | Debian 13                  | x64           | `mcr.microsoft.com/dotnet-buildtools/prereqs:debian-13-gcc15-amd64`                     |        *N/A*           |
 | Ubuntu (x64)      | Tizen 9.0                  | Arm32 (armel) | `mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-22.04-cross-armel-tizen`            | `/crossrootfs/armel`   |
 
 ## Build the Repo
diff --git a/eng/pipelines/common/platform-matrix.yml b/eng/pipelines/common/platform-matrix.yml
index 7aa0b109b2a635..e68f0de7164863 100644
--- a/eng/pipelines/common/platform-matrix.yml
+++ b/eng/pipelines/common/platform-matrix.yml
@@ -327,7 +327,7 @@ jobs:
       targetRid: linux-x64
       platform: linux_x64
       shouldContinueOnError: ${{ parameters.shouldContinueOnError }}
-      container: debian-12-gcc15-amd64
+      container: debian-13-gcc15-amd64
       jobParameters:
         runtimeFlavor: ${{ parameters.runtimeFlavor }}
         buildConfig: ${{ parameters.buildConfig }}
diff --git a/eng/pipelines/common/templates/pipeline-with-resources.yml b/eng/pipelines/common/templates/pipeline-with-resources.yml
index 97419e13805fae..a5a672b5915e76 100644
--- a/eng/pipelines/common/templates/pipeline-with-resources.yml
+++ b/eng/pipelines/common/templates/pipeline-with-resources.yml
@@ -102,8 +102,8 @@ extends:
         env:
           ROOTFS_DIR: /crossrootfs/loongarch64
 
-      debian-12-gcc15-amd64:
-        image: mcr.microsoft.com/dotnet-buildtools/prereqs:debian-12-gcc15-amd64
+      debian-13-gcc15-amd64:
+        image: mcr.microsoft.com/dotnet-buildtools/prereqs:debian-13-gcc15-amd64
 
       linux_x64_llvmaot:
         image: mcr.microsoft.com/dotnet-buildtools/prereqs:centos-stream-10-amd64